Sommaire général

Bobines d'induction en régime sinusoïdal

III. Influences entre plusieurs bobines

3. Inductance mutuelle (Mutuelle)

d. Expression des flux

Les bobines précédentes sont toutes deux parcourues par des courants non nuls. Dans ce cas et si le circuit magnétique n’est pas saturé alors les contributions de chacune des bobines s’ajoutent (théorème de superposition) :

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B1B2i1(t)v1(t)B1B2i2(t)v2(t)e2(t)e1(t)Φ(t)

Remarque : si le circuit magnétique est saturé alors l’augmentation d’un courant n’entraîne pas une augmentation proportionnelle du champ magnétique (donc du flux) et le théorème de superposition n’est pas utilisable.